Scraper



April 18. 1944. R. s. HORNER SCRAPER Filed Sept. 16, 1942 3 Sheets-Sheet l INVENTOR. )FI/.STEL L 5. HOIENE mw f N W o7 rivelata aaa ra rata @Woelli d. worden' .l l

implication deptemilcr idg d @lalmn (im. Wim-wlmi This invention relates broadly to earth han dling machines and more specically to tractor drawn Scrapers, such as employed in ara baci; filling, snow removal and similar highway maintenance operations.

One oi the objects oi the invention is to pro-a vide a scraper blade supporting structure winch is designed to facilitate the complete rotation oi the blade in a horizontal plane; to accommodate angular adjustments thereoi in such plane; to iacilitate the elevation of the blade in a 'vertical plane and accommodate angular adjustments divergent such plane irrespective its elevation or horizontal adjustment.

Another object of the invention is to provide a scraper coupling which is designed to edect the imposition oi the load upon the vehicle in. such relation to the running scar as to produce the maximum tractive edort thereoi.

Another object of the invention is to provide a scraper supporting structure which is con structed to accommodate the use of the implement as a pusher for baci; filling, terracina, etc., when the vehicle is driven in one direction, and as a grader, snow plow, etc., when the vehicle is 2li der,

driven in the opposite direction.

Another object is the invention is to provide a road scraper which is designed to negotiate sharp bends, abrupt declivities and road undulations without manipulation of the scraper blade elevating mechanism and further to provide a scraper which will dislodge and eflect the transposition of loose or broken waste material or soil consonant with the depth of deposit thereof.

Another object of the invention is to provide a shock absorber for the scraper supporting structure which will permit deflection of the blade when engaged with immobile obstructions and the ready recovery thereof after such obstructions have been traversed.

Other objects and advantages more or less ancillary to the foregoing and the manner inV which all the various objects are re appear in the following description, which considered in connection with the accompanying drawings, sets forth the preferred embodiment of the invention.

Referring to the drawings wherein the preferred embodiment of the invention is illustrated:

Fig. 1 is a side elevational view of the improved 50 scraper including a fragmentary portion of a tractor;

Fig. 2 is a pian view thereof;

Fig. :i is a rear elevational view of the scraper and tractor shown in Fig. 1;

tairen on a plane indicated by the line :ii-d

Fig. dis a vertical sectional view oi the pivotal support lor the scraper blade, the section being in Fla. 2;

Fia. 5 is a view in perspective oi a fragmentary portion oi the blade adiustina mechanism; and Fig. 6 is a vertical section through the adjust ing linkage, the section beine taten on a plane indicated by the line in Fig. i.

As illustrated in Fig. l, the vehicle chosen herein for purposes of illustration comprises a tractor iii embodying a power actuated arm il, a pair oi lugs il and a draw bar pivot iii provided for the support oi various agricultural imple ments.

The scraper embodying the present invention comprises a pair oi arms dd connected to the draw har pivot it and telescopically engaged with the forward end portions oi channel irons ti constituting the side rails of the scraper blade supporting frame. The frame, as will be seen in Fia. 2, comprises in addition to the channels li a cross member 2t having pintles dd welded to the end portions thereof which are arranged to extend through and project beyond the webs of the channels (Fia. 2). The outer ends oi the arms 2d are upset and cross drilled for enragement with the pintles it, being laterally retained thereon by washers 2d and cotter pins td. The frame further includes diagonal braces 2B welded or otherwise rmly aiiixed upon the channel side rails il and the cross member 22. The outer ends of the rails 2i are provided with bearing blocks 2l which are drilled for the reception of bolts 2B mounted in lugs 29 in the upper plate l0 of the scraper supporting structure. As will be seen in Fig. 4 the lower mating plate 3| of the supporting structure is formed with a spindle 32 in the central portion thereof', the free end of which is threaded for the reception of a sleeve for the retention of the hub Il of the plate 3l. The outer edge of the plate 3| is drilled to provide a continuous series of holes 35 disposed in equidistant relation with each other. in a. common bolt circle, concentric with the spindle 32. The plate ll is cast with depending ears Il machined for the reception of dowels I1 and bolts 3l for the support of angle irons 3l constituting reinforcing members for the scraper blade Il. The plate 3l is further formed with spaced lugs Il drilled to support a pair of struts 4l coupled for pivotal movement with the angle irons il.

The contiguous faces of theplates ll and 3l are undercut adjacent the outer portions thereof in order to reduce the frlctional resistance incident rotative adjustments of the plate Si. The plate t@ is formed with a boss 44 drilled iox-.the reception of a pin 45 disposed for reentrant engagement in the openings 35 in the plate ti. The lugs 29 in the plate 3u are machined for the support of arms it having openings in the ends thereof for the reception of eye bolts di, the inner ends of which are threaded and united by a turn buckle coupling d8. heads of the eye |bolts d? are drawn into abutting engagement with the outer faces of the arms t6, the opening in the eyes having rods i9 extended therethrough for the support oi contractile springs El@ and di. The inner ends of the rods t@ are welded to angle irons or bars t, the springs 5t being retained by cup washers and nuts 55, the springs Eil being supported by an angle cross brace 5t welded upon the ends of angie irons 53.

The frame for eectuating the angular adjustment of the blade in a vertical plane comprises a bar 5l! mounted for pivotal movement on a lbolt in the lug i2 formed in the tractor frame it. The bar is drilled, as shown in Figs. 1 and 5 with a double series of holes disposed in staggered relation to facilitate the support of a pin 58 mounted in openings in the free ends of the angle irons 53. As will be seen in Fig. 6, the inner ends of the angle irons are united by a gusset plate s@ disposed to support the top anges of the angles in spaced relation so that the bar 5l may slide freely .between the parallel portions thereof. The lower legs of the angle irons 5S are further united by e, lieclip Il@ which is welded thereto, the bose thereof being formed tween the angle irons. parallel portions of the se gusset plate having a of angie clips riveted thereto 'forming e bracket (see .for the support oi a E53 pivotelly connected to a lever on the if'. The outer er E ci the ha` 2 irurther suppe teo; by Lil-clip eoured to the depending of the le irons and pan the opening donned the ne thereof,

Adriacent the oi? the angle irons here is a ,d 'i on rea: wl c position of the scraper vertical pme [hay be meet ing conditions encountered or snow removal by adjusting the angie irons in lineal relation to the bar in making such ad i justement scraper blade is first elevated, by actuation of arm li, to a point slightly above the earths surface, the pin 5a is then removed and the angle irons then shifted forward or backm wards along the Ibar lever dil.

The scraper blade is adiusd in horizontal plane by rst removing the pin 35, then rotating the plate Si relative to the plate Sil, the pin being inally reset in the selected opening to locl; the plates together in their adjusted relation. When the scraper is used as a pusher the blade it may be revolved 186 so that the concave surface there oi will face rearwardly. When the blade is so adjusted the vehicle may be operated in reverse gear. The springs t@ and 5i are constructed to withstand the normal loads imposed upon the blade during grading operations or snow removal but to yield and permit the scraper blade assembly to rock about its fulcrum when the blade to bridge the opening be= 5l by manipulation of the .i

In assembly the essere? engages an immovable object auch as a large or 1deply embedded boulder, curb stones and the Although the foregoing description is necessarily of a detailed character, in order that the invention may be completely set i'orth, it is to be understood that the specic terminology is not intended to be restrictive or confining, and that various rearrangements of parts and modifications of detail may be resorted to without departing from the scope or spirit of the invention as herein claimed.

I claim:

l. In combination with a. tractor having a power actuated elevating arm thereon and a draw bar pivot, a scraper comprising a. frame coupled with said draw bar pivot and said arm, a plate pivotally mounted on said frame, a second plate pivotally connected to the iirst named plate, a scraper blade mounted thereon normal thereto, said second plate having openings therein dlsposed in equi-distant spaced relation on a center line defining a complete circle, a pin in the first named plate mounted for reentrant engagement in the openings in the second named plate, arms amxed upon the rst named plate normal the upper face thereof, bars pivotally connected therewith, springs disposed in abutting engagement with the opposed sides of said arms supported by said bars, and a second bar having spaced holes therein adjustably connected with the first named bars and pivotally connected to the tractor.

2. In combination with a tractor having a power actuated elevating arm thereon and a draw bar pivot, a scraper comprising a frame coupled with said draw bar pivot and said arm, a plate pivotally mounted on said frame, a second plate pivotaily connected to the rst named plate having holes therein disposed in equi-spaced relation in a complete circle, a pin in the first named plate engageable with the holes in the second named plate, a scraper blade on the second named plate, vertically disposed arms en the first named plate, bars resiliently coupled therewith, a second bar coupled with the tractor, an adjustable connection between the first named bars and the last named bar a lever pivoted to the tractor and connected with said bars to facilitate lineal movement thereof.

ln combination with a vehicle having a draw bar pivot thereon and an elevating mechanism, a scraper, comprising a frame coupled with seid draw bar pivot and coupled intermediate its ends with said elevating mechanism, a circular plate, pivot pins thereon coupled with said frame, a hub in the center thereof, a disc engaged with said plate, a spindle on said disc engaged with said hub, a sleeve threaded on said spindle and engaged with said hub, said disc having a plurality of openings in the face thereon, arranged in equi-spaced relation with each other and concentric the axis of said spindle, a scraper blade mounted on said disc, a pin in said plate engageable with said openings in said disc for the securement of the disc in adjusted position relative to the plate, vertically disposed arms affixed to said plate, eye bolts in said arms, bars extended through said eyes, abutments on said bars, springs on said bars impinged between the heads of said eye bolts and said abutments on said bars, a second bar having a plurality of openings therein pivotally mounted upon the vehicle, and a pin in said bars engageable with the openings in said bar for the securement of the bars in adjusted 360B, a. concave scraper mounted on said second position relative to each other. plate, a second frame for rocking said plate angu- 4. In combination with a vehicle having an larly about said pivotal connection on the rst elevating mechanism thereon, a. scraper cornnamed frame, the leading edge of said scraper prising a frame lpivotally coupled with said 5 blade being disposed beyond the edges of said vehicle and with said elevating mechanism, a plates when the concave face of the blade is'faced circular plate, a pivotal connection thereon couforwardly or rearwardly normal to the medial axis pled with said frame, a hub on said plate, a second of the frame and the plates are rocked angularly circular plate, a spindle thereon engaging said about the pivot on the first named frame.

hub, means for locking the first and second, '10

named plates in rotative adjustment throughout RUSSELL S. HORNER. 

